非线性强迫振动系统的动态特性分析

Analysis on Dynamic-respond Character for Nonlinear Forced Vibrating System

本文通过建立非线性强迫振动系统的动态特性评价体系，实现对工业应用振动设备或系统的起动、变频、变幅等过渡过程的动态特性评价。通过对实际系统的分析及研究，揭示出非线性强迫振动系统的系统参数对其系统动态品质特性的影响．系统在不同的输出情况下具有不同的动态特性──这一非线性强迫振动系统特有的现象。同时介绍了适用于多非线性环节的控制系统的动态过程计算的方法──离散相似法。

Through setting the appraisal system of dynamic-respond character for nonlinear forced vibrating system,this paper appraised the dynamic-respond character of starting,changing frequency and changing amplitude of vibrating equipment or vibrating system used in industry.It revealed the effect of systematic parameter of nonlinear forced vibrating system on the system dynamic-respond character,and also stated one peculiar phenomenon of nonlinear forced vibrating system-the system dynamic-respond character was different if outputting different signals. In addition, the paper presented discrete similar method applied to calculate the dynamic state of system to control multi-nonlinear links.